South Carolina House members say an audit of the Department of Transportation verifies that fixing the state's crumbling roads requires additional money and a lot of it from a reliable, dedicated source of money like the gas tax.

Brad Hanley with the Legislative Audit Council told a House panel Thursday that South Carolina ranks at the bottom nationally in investing in its roads.

He says while the audit found process and governance issues, it found no mismanagement or fraud. Hanley agrees the DOT needs a "steady stream" of revenue.

Next week, the House will debate the Senate's plan pledging to designate $400 million yearly from the general fund to roadwork. House members say such a promise can't be kept, and the audit shows the DOT needs much more.